Radio Resource Configuration Method and Device

ABSTRACT

A radio resource configuration method and device are disclosed. The radio resource configuration method includes: after a piece of user equipment UE establishes a connection with a base station according to a system bandwidth in a broadcast message, determining, by the base station for the UE, resource configuration used for communication between the UE and the base station, where the resource configuration includes at least one of a resource allocation bandwidth, a channel state information CSI pilot bandwidth, and a CSI measurement bandwidth, where the resource allocation bandwidth is a bandwidth used to generate resource block allocation information in downlink control information; and sending, by the base station to the UE by using dedicated signaling or a common message, the resource configuration determined for the UE and used for communication between the UE and the base station.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.16/161,863, filed on Oct. 16, 2018, which is a continuation of U.S.patent application Ser. No. 14/839,219, filed on Aug. 28, 2015, now U.S.patent Ser. No. 10/111,225, which is a continuation of InternationalApplication No. PCT/CN2013/071964, filed on Feb. 28, 2013. All of theafore-mentioned patent applications are hereby incorporated by referencein their entireties.

TECHNICAL FIELD

Embodiments of the present invention relate to the field ofcommunications technologies, and in particular, to a radio resourceconfiguration method and a device.

BACKGROUND

In existing wireless communications standards such as the 3rd GenerationPartnership Project (3GPP) Long Term Evolution (LTE), a network sidebroadcasts a system bandwidth, namely, a spectrum resource, used by acurrent cell; and a piece of user equipment (UE) communicates with thenetwork side within the notified system bandwidth.

Specifically, from establishment of a radio resource control (RRC)protocol link to actual service transmission, all spectrum resources, ofthe UE, used for data receiving and transmission are limited within thesystem bandwidth broadcast by a system, and these spectrum resourcesneed to satisfy a limited number of standard bandwidth values that aredefined by a standard. In addition, to implement downlink dynamicadaptation, the UE needs to measure downlink reference signals, andfeeds back a measurement result to the network side, where thesedownlink reference signals for measuring channel state information areall transmitted based on a limited number of standard bandwidths, and ameasurement manner used on the side of the UE is also based on theseveral standard bandwidths.

However, an actual available bandwidth is different from the systembandwidth to some extent in an actual situation. For example, in manyscenarios such as frequency-division multiplexing (FDM) inter-cellinterference coordination (ICIC), a non-standard spectrum, and acapability difference between UEs, there is a case in which an actualavailable bandwidth is inconsistent with the system bandwidth.

The configuration manner in the prior art in which the network sidelimits all working spectrums of the UE within the system bandwidthcannot effectively and fully use a radio resource.

SUMMARY

Embodiments of the present invention provide a radio resourceconfiguration method and a device, so that a radio resource can beeffectively and fully used.

To resolve the foregoing technical problem, the embodiments of thepresent invention disclose the following technical solutions:

According to a first aspect, a radio resource configuration method isprovided, after a piece of user equipment UE establishes a connectionwith a base station according to a system bandwidth in a broadcastmessage, including: determining, by the base station for the UE,resource configuration used for communication between the UE and thebase station, where the resource configuration includes at least one ofa resource allocation bandwidth, a channel state information CSI pilotbandwidth, and a CSI measurement bandwidth, where the resourceallocation bandwidth is a bandwidth used to generate resource blockallocation information in downlink control information; and sending, bythe base station to the UE by using dedicated signaling or a commonmessage, the resource configuration that is determined for the UE andused for communication between the UE and the base station.

With reference to the first aspect, in a first possible implementationmanner, if the resource configuration includes the resource allocationbandwidth, a value of the resource allocation bandwidth and a value ofthe system bandwidth are independent from each other; and/or if theresource configuration includes the CSI pilot bandwidth, a value of theCSI pilot bandwidth and a value of the system bandwidth are independentfrom each other; and/or if the resource configuration includes the CSImeasurement bandwidth, a value of the CSI measurement bandwidth and avalue of the system bandwidth are independent from each other.

With reference to the first aspect, and/or the first possibleimplementation manner, in a second possible implementation manner, thedetermining, by the base station for the UE, resource configuration usedfor communication between the UE and the base station includes:determining, by the base station, an actual available bandwidth of theUE; and determining, by the base station according to the actualavailable bandwidth of the UE, the resource configuration used forcommunication between the UE and the base station.

With reference to the second possible implementation manner, in a thirdpossible implementation manner, the determining, by the base station, anactual available bandwidth of the UE includes: determining, by the basestation, the actual available bandwidth of the UE according to an accessprocess of the UE or a UE capability reported by the UE.

With reference to the second possible implementation manner, in a fourthpossible implementation manner, the determining, by the base stationaccording to the actual available bandwidth of the UE, the resourceconfiguration used for communication between the UE and the base stationincludes: if the resource configuration includes the resource allocationbandwidth, determining that the actual available bandwidth is locatedwithin the resource allocation bandwidth; and/or if the resourceconfiguration includes the CSI pilot bandwidth, determining that the CSIpilot bandwidth is located within the actual available bandwidth; and/orif the resource configuration includes the CSI measurement bandwidth,determining that the CSI measurement bandwidth is located within theactual available bandwidth.

With reference to the first aspect, and/or the first possibleimplementation manner, and/or the second possible implementation manner,and/or the third possible implementation manner, and/or the fourthpossible implementation manner, in a fifth possible implementationmanner, if the resource configuration includes the resource allocationbandwidth, the determining, by the base station, resource configurationused for communication between the UE and the base station includes:determining, by the base station, a resource allocation bandwidth usedby resource allocation indication information of a physical datachannel, where a logical channel carried by the physical data channel isa non-common logical channel.

With reference to the fifth possible implementation manner, in a sixthpossible implementation manner, a size of a resource block group RBGused by the resource allocation indication information of the physicaldata channel is consistent with a size of an RBG determined by thesystem bandwidth.

With reference to the first aspect, and/or the first possibleimplementation manner, and/or the second possible implementation manner,and/or the third possible implementation manner, and/or the fourthpossible implementation manner, and/or the fifth possible implementationmanner, in a seventh possible implementation manner, the CSI pilotincludes at least one of the following: a non-zero power CSI referencesignal NZP CSI-RS, a zero power CSI reference signal ZP CSI-RS, a cellspecific reference signal CRS, and a sounding reference signal SRS.

With reference to the first aspect, and/or the first possibleimplementation manner, and/or the second possible implementation manner,and/or the third possible implementation manner, and/or the fourthpossible implementation manner, and/or the fifth possible implementationmanner, and/or the sixth possible implementation manner, and/or theseventh possible implementation manner, in an eighth possibleimplementation manner, if the resource configuration includes the CSIpilot bandwidth, and the CSI pilot bandwidth is an SRS frequency domainresource, the SRS frequency domain resource and an uplink systembandwidth are independent from each other.

With reference to the eighth possible implementation manner, in a ninthpossible implementation manner, if a CSI pilot is an uplink SRS, thedetermining, by the base station, resource configuration used forcommunication between the UE and the base station includes: determining,by the base station, UE-level SRS bandwidth configuration C_(SRS), anSRS bandwidth B_(SRS), a frequency hopping bandwidth b_(hop), and afrequency domain position n_(RRC) of the UE, so that the UE determinesan SRS frequency domain resource according to the UE-level C_(SRS), theB_(SRS), the b_(hop), and the n_(RRC); or determining, by the basestation, an SRS allocation bandwidth N_(RB,SRS) ^(UL), UE-level orcell-level C_(SRS), B_(SRS), b_(hop), and n_(RRC) of the UE, so that theUE determines an SRS frequency domain resource according to theN_(RB,SRS) ^(UL), the UE-level or cell-level C_(SRS), the B_(SRS), theb_(hop), and the n_(RRC).

With reference to the first aspect, and/or the first possibleimplementation manner, and/or the second possible implementation manner,and/or the third possible implementation manner, and/or the fourthpossible implementation manner, in a tenth possible implementationmanner, if the resource configuration includes the CSI pilot bandwidthand the CSI measurement bandwidth, the CSI measurement bandwidth islocated within the CSI pilot bandwidth.

With reference to the first aspect, and/or the first possibleimplementation manner, and/or the second possible implementation manner,and/or the third possible implementation manner, and/or the fourthpossible implementation manner, in an eleventh possible implementationmanner, the base station determines multiple CSI measurement bandwidthsfor the UE, so that the UE independently performs CSI measurement ineach CSI measurement bandwidth.

With reference to the first aspect, and/or the first possibleimplementation manner, and/or the second possible implementation manner,and/or the third possible implementation manner, and/or the fourthpossible implementation manner, in a twelfth possible implementationmanner, when the method is applied to a multi-carrier scenario thatincludes at least a first carrier and a second carrier, the determining,by the base station for the UE, resource configuration used forcommunication between the UE and the base station includes: determining,by the base station for the UE, the resource configuration on the firstcarrier; and the method further includes: determining, by the basestation, scheduling information of the UE on the second carrier, wherethe scheduling information includes at least one of a resourceallocation bandwidth, a CSI pilot bandwidth, and a CSI measurementbandwidth, and frequency number information of the second carrier.

With reference to the twelfth possible implementation manner, in athirteenth possible implementation manner, the scheduling informationfurther includes parameters for determining a signal waveform of thesecond carrier.

With reference to the twelfth possible implementation manner, in afourteenth possible implementation manner, before the base stationdetermines the scheduling information of the UE on the second carrier byusing the first carrier, the method further includes: determining, bythe base station, an actual available bandwidth of the UE on the secondcarrier; and the determining, by the base station, schedulinginformation of the UE on the second carrier is specifically:determining, by the base station, the scheduling information of the UEon the second carrier according to the actual available bandwidth of theUE on the second carrier.

With reference to the fourteenth possible implementation manner, in afifteenth possible implementation manner, the determining, by the basestation, an actual available bandwidth of the UE on the second carrierincludes: broadcasting, by the base station, spectrum indicationinformation; receiving, by the base station, a spectrum that is sent bythe UE and selected by the UE based on the spectrum indicationinformation broadcast by the base station; and determining, by the basestation, the received spectrum, selected by the UE, as the actualavailable bandwidth.

With reference to the fourteenth possible implementation manner, in asixteenth possible implementation manner, the determining, by the basestation, an actual available bandwidth of the UE on the second carrierincludes: receiving, by the base station, a spectrum range that is sentby the UE and selected by the UE within an available spectrum range; anddetermining, by the base station, the actual available bandwidth in thespectrum range selected by the UE.

According to a second aspect, a communications method is provided, aftera piece of user equipment UE establishes a connection with a basestation according to a system bandwidth in a broadcast message,including: receiving, by the UE, resource configuration that is sent bythe base station by using dedicated signaling or a common message andused for communication between the UE and the base station, where theresource configuration is determined by the base station for the UE, andthe resource configuration includes at least one of a resourceallocation bandwidth, a channel state information CSI pilot bandwidth,and a CSI measurement bandwidth, where the resource allocation bandwidthis a bandwidth used to generate resource block allocation information indownlink control information; and communicating, by the UE, with thebase station according to the resource configuration used forcommunication between the UE and the base station.

With reference to the second aspect, in a first possible implementationmanner, if the resource configuration includes the resource allocationbandwidth, the communicating, by the UE, with the base station accordingto the resource configuration used for communication between the UE andthe base station includes: determining, by the UE according to theresource allocation bandwidth and resource allocation indicationinformation of a physical data channel, a physical resource occupied bythe physical data channel, where a logical channel carried by thephysical data channel is a non-common logical channel.

With reference to the second aspect, in a second possible implementationmanner, if the resource configuration includes the CSI pilot bandwidth,before the communicating, by the UE, with the base station according tothe resource configuration used for communication between the UE and thebase station, the method further includes: receiving, by the UE, a CSIpilot bandwidth of the base station; and determining, by the UEaccording to the CSI pilot bandwidth configured for the UE by the basestation and the CSI pilot bandwidth of the base station, a relativeposition, of the CSI pilot bandwidth configured for the UE by the basestation, in the CSI pilot bandwidth of the base station, so as tointercept, according to the relative position from a CSI pilot sequenceused by the base station, a CSI pilot sequence used by the UE; and thecommunicating, by the UE, with the base station according to theresource configuration used for communication between the UE and thebase station is specifically: performing, by the UE, CSI measurement inthe CSI measurement bandwidth by using the intercepted CSI pilotsequence.

With reference to the second aspect, and/or the first possibleimplementation manner, and/or the second possible implementation manner,in a third possible implementation manner, if the resource configurationincludes the CSI pilot bandwidth, and the CSI pilot bandwidth is asounding reference signal SRS frequency domain resource, the SRSfrequency domain resource and an uplink system bandwidth are independentfrom each other.

With reference to the third possible implementation manner, in a fourthpossible implementation manner, if a CSI pilot is an uplink SRS, thereceiving, by the UE, resource configuration that is sent by the basestation by using dedicated signaling or a common message and used forcommunication between the UE and the base station includes: receiving,by the UE, UE-level SRS bandwidth configuration C_(SRS), an SRSbandwidth B_(SRS), a frequency hopping bandwidth b_(hop), and afrequency domain position n_(RRC) that are configured for the UE by thebase station; and the communicating, by the UE, with the base stationaccording to the resource configuration used for communication betweenthe UE and the base station includes: determining, by the UE, an SRSfrequency domain resource according to the UE-level C_(SRS), theB_(SRS), the b_(hop), and the n_(RRC); and communicating, by the UE,with the base station according to the SRS frequency domain resource.

With reference to the third possible implementation manner, in a fifthpossible implementation manner, if a CSI pilot is an uplink SRS, thereceiving, by the UE, resource configuration that is sent by the basestation by using dedicated signaling or a common message and used forcommunication between the UE and the base station includes: receiving,by the UE, an SRS allocation bandwidth N_(RB,SRS) ^(UL), UE-level orcell-level C_(SRS), B_(SRS), b_(hop), and n_(RRC) of the UE that areconfigured by the base station; and the communicating, by the UE, withthe base station according to the resource configuration used forcommunication between the UE and the base station includes: determining,by the UE, an SRS frequency domain resource according to the N_(RB,SRS)^(UL), the UE-level or cell-level C_(SRS), the B_(SRS), the b_(hop), andthe n_(RRC); and communicating, by the UE, with the base stationaccording to the SRS frequency domain resource.

With reference to the second aspect, in a sixth possible implementationmanner, if the resource configuration includes multiple CSI measurementbandwidths, the communicating, by the UE, with the base stationaccording to the resource configuration used for communication betweenthe UE and the base station includes: independently performing, by theUE, CSI measurement in each CSI measurement bandwidth of the multipleCSI measurement bandwidths.

With reference to the second aspect, in a seventh possibleimplementation manner, when the method is applied to a multi-carrierscenario that includes at least a first carrier and a second carrier,the receiving, by the UE, resource configuration that is sent by thebase station by using dedicated signaling or a common message and usedfor communication between the UE and the base station is specifically:receiving, by the UE on the first carrier, the resource configuration,sent by the base station by using the dedicated signaling or the commonmessage, of the UE on the first carrier; and the method furtherincludes: receiving, by the UE on the first carrier, schedulinginformation, sent by the base station by using the dedicated signalingor the common message, of the UE on the second carrier, where thescheduling information includes any one or any combination of a resourceallocation bandwidth, a CSI pilot bandwidth, and a CSI measurementbandwidth, and frequency number information of the second carrier.

With reference to the seventh possible implementation manner, in aneighth possible implementation manner, the scheduling informationfurther includes parameters for determining a signal waveform of thesecond carrier.

According to a third aspect, a base station is provided, including: adetermining unit, configured to: after a piece of user equipment UEestablishes a connection with the base station according to a systembandwidth in a broadcast message, determine, for the user equipment,resource configuration used for communication between the UE and thebase station, where the resource configuration includes at least one ofa resource allocation bandwidth, a channel state information CSI pilotbandwidth, and a CSI measurement bandwidth, where the resourceallocation bandwidth is a bandwidth used to generate resource blockallocation information in downlink control information; and a sendingunit, configured to send, to the UE by using dedicated signaling or acommon message, the resource configuration that is determined for the UEand used for communication between the UE and the base station.

With reference to the third aspect, in a first possible implementationmanner, the determining unit includes: a first bandwidth determiningsubunit, configured to determine an actual available bandwidth of theUE; and a first resource determining subunit, specifically configured todetermine, according to the actual available bandwidth of the UE, theresource configuration used for communication between the UE and thebase station.

With reference to the first possible implementation manner, in a secondpossible implementation manner, the determining unit is specificallyconfigured to: if the resource configuration includes the resourceallocation bandwidth, determine that the actual available bandwidth islocated within the resource allocation bandwidth; if the resourceconfiguration includes the CSI pilot bandwidth, determine that the CSIpilot bandwidth is located within the actual available bandwidth; and ifthe resource configuration includes the CSI measurement bandwidth,determine that the CSI measurement bandwidth is located within theactual available bandwidth.

With reference to the third aspect, and/or the first possibleimplementation manner, and/or the second possible implementation manner,in a third possible implementation manner, the determining unit isspecifically configured to: if the resource configuration includes theresource allocation bandwidth, determine a resource allocation bandwidthused by resource allocation indication information of a physical datachannel, where a logical channel carried by the physical data channel isa non-common logical channel.

With reference to the third aspect, and/or the first possibleimplementation manner, and/or the second possible implementation manner,in a fourth possible implementation manner, the determining unit isspecifically configured to: when the CSI pilot is an uplink soundingreference signal SRS, determine UE-level SRS bandwidth configurationC_(SRS), an SRS bandwidth B_(SRS), a frequency hopping bandwidthb_(hop), and a frequency domain position n_(RRC) of the UE, so that theUE determines an SRS frequency domain resource according to the UE-levelC_(SRS), the B_(SRS), the b_(hop), and the n_(RRC); or determine an SRSallocation bandwidth N_(RB,SRS) ^(UL), UE-level or cell-level C_(SRS),B_(SRS), b_(hop), and n_(RRC) of the UE, so that the UE determines anSRS frequency domain resource according to the N_(RB,SRS) ^(UL), theUE-level or cell-level C_(SRS), the B_(SRS), the b_(hop), and then_(RRC).

With reference to the third aspect, and/or the first possibleimplementation manner, and/or the second possible implementation manner,in a fifth possible implementation manner, the determining unit isspecifically configured to determine multiple CSI measurementbandwidths, so that the UE independently performs CSI measurement ineach CSI measurement bandwidth.

With reference to the third aspect, and/or the first possibleimplementation manner, and/or the second possible implementation manner,in a sixth possible implementation manner, when the base station isapplied to a multi-carrier scenario that includes at least a firstcarrier and a second carrier, the determining unit is specificallyconfigured to determine the resource configuration of the UE on thefirst carrier; and the determining unit is further configured todetermine scheduling information of the UE on the second carrier, wherethe scheduling information includes any one or any combination of aresource allocation bandwidth, a CSI pilot bandwidth, and a CSImeasurement bandwidth, and frequency number information of the secondcarrier.

With reference to the sixth possible implementation manner, in a seventhpossible implementation manner, the determining unit includes: a secondbandwidth determining subunit, configured to: before the schedulinginformation of the UE on the second carrier is determined, determine anactual available bandwidth of the UE on the second carrier; and a secondresource determining subunit, configured to determine the schedulinginformation of the UE on the second carrier according to the actualavailable bandwidth of the UE on the second carrier.

With reference to the seventh possible implementation manner, in aneighth possible implementation manner, the second bandwidth determiningsubunit includes: a broadcasting subunit, configured to broadcastspectrum indication information; a first receiving subunit, configuredto receive a spectrum that is sent by the UE and selected by the UEbased on the spectrum indication information broadcast by the basestation; and a first determining subunit, configured to determine thereceived spectrum, selected by the UE, as the actual availablebandwidth.

With reference to the seventh possible implementation manner, in a ninthpossible implementation manner, the second bandwidth determining subunitincludes: a second receiving subunit, configured to receive a spectrumrange that is sent by the UE and selected by the UE within an availablespectrum range; and a second determining subunit, configured todetermine the actual available bandwidth in the spectrum range selectedby the UE.

According to a fourth aspect, a piece of user equipment is provided,including: a receiving unit, configured to: after the user equipment UEestablishes a connection with a base station according to a systembandwidth in a broadcast message, receive resource configuration that issent by the base station by using dedicated signaling or a commonmessage and used for communication between the UE and the base station,where the resource configuration is determined by the base station forthe UE, and the resource configuration includes at least one of aresource allocation bandwidth, a channel state information CSI pilotbandwidth, and a CSI measurement bandwidth, where the resourceallocation bandwidth is a bandwidth used to generate resource blockallocation information in downlink control information; and acommunications unit, configured to communicate with the base stationaccording to the resource configuration used for communication betweenthe UE and the base station.

With reference to the fourth aspect, in a first possible implementationmanner, if the resource configuration includes the resource allocationbandwidth, the communications unit is configured to determine, accordingto the resource allocation bandwidth and resource allocation indicationinformation of a physical data channel, a physical resource occupied bythe physical data channel, where a logical channel carried by thephysical data channel is a non-common logical channel.

With reference to the fourth aspect, in a second possible implementationmanner, the user equipment further includes: an information receivingunit, configured to: when the resource configuration includes the CSIpilot bandwidth, before the communications unit communicates with thebase station according to the resource configuration configured by thebase station, receive a CSI pilot bandwidth of the base station; and asequence acquisition unit, configured to determine, according to the CSIpilot bandwidth configured for the UE by the base station and the CSIpilot bandwidth of the base station, a relative position, of the CSIpilot bandwidth configured for the UE by the base station, in the CSIpilot bandwidth of the base station, so as to intercept, according tothe relative position from a CSI pilot sequence used by the basestation, a CSI pilot sequence used by the UE, where the communicationsunit is specifically configured to perform CSI measurement in the CSImeasurement bandwidth by using the intercepted CSI pilot sequence.

With reference to the fourth aspect, in a third possible implementationmanner, the receiving unit is specifically configured to: when the CSIpilot is an uplink sounding reference signal SRS, receive UE-level SRSbandwidth configuration C_(SRS), an SRS bandwidth B_(SRS), a frequencyhopping bandwidth b_(hop), and a frequency domain position n_(RRC) thatare configured for the UE by the base station; and the communicationsunit includes: a first determining subunit, configured to determine anSRS frequency domain resource according to the UE-level C_(SRS), theB_(SRS), the b_(hop), and the n_(RRC); and a first communicationssubunit, configured to communicate with the base station according tothe SRS frequency domain resource determined by the first determiningsubunit.

With reference to the fourth aspect, in a fourth possible implementationmanner, the receiving unit is configured to: when the CSI pilot is anuplink SRS, receive an SRS allocation bandwidth N_(RB,SRS) ^(UL),UE-level or cell-level C_(SRS), B_(SRS), b_(hop), and n_(RRC) of the UEthat are configured by the base station; and the communications unitincludes: a second determining subunit, configured to determine an SRSfrequency domain resource according to the N_(RB,SRS) ^(UL), theUE-level or cell-level C_(SRS), the B_(SRS), the b_(hop), and then_(RRC); and a second communications subunit, configured to communicatewith the base station according to the SRS frequency domain resourcedetermined by the second determining subunit.

With reference to the fourth aspect, in a fifth possible implementationmanner, the communications unit is specifically configured to: when theresource configuration includes multiple CSI measurement bandwidths,independently perform CSI measurement in each CSI measurement bandwidthof the multiple CSI measurement bandwidths.

With reference to the fourth aspect, in a sixth possible implementationmanner, the receiving unit is configured to: when the user equipment isapplied to a multi-carrier scenario that includes at least a firstcarrier and a second carrier, receive, on the first carrier, theresource configuration, sent by the base station by using the dedicatedsignaling or the common message, of the UE on the first carrier; andreceive, on the first carrier, scheduling information, sent by the basestation by using the dedicated signaling or the common message, of theUE on the second carrier, where the scheduling information includes anyone or any combination of a resource allocation bandwidth, a CSI pilotbandwidth, and a CSI measurement bandwidth, and frequency numberinformation of the second carrier.

In the embodiments of the present invention, after a UE establishes aconnection with a base station, the base station reconfigures a radioresource for the UE, so that the radio resource is effectively and fullyused.

BRIEF DESCRIPTION OF THE DRAWINGS

To describe the technical solutions in the embodiments of the presentinvention or in the prior art more clearly, the following brieflyintroduces the accompanying drawings required for describing theembodiments or the prior art. Apparently, the accompanying drawings inthe following description show merely some embodiments of the presentinvention, and a person of ordinary skill in the art may still deriveother drawings from these accompanying drawings without creativeefforts.

FIG. 1 is a flowchart of a radio resource configuration method accordingto an embodiment of the present invention;

FIG. 2a to FIG. 2b are schematic diagrams showing that a base stationdetermines resource configuration for a UE according to a firstembodiment of the embodiments of the present invention;

FIG. 3a to FIG. 3b are schematic diagrams showing that a base stationdetermines resource configuration for a UE according to a secondembodiment of the embodiments of the present invention;

FIG. 4 is a schematic diagram showing that a base station determinesresource configuration for a UE according to a third embodiment of theembodiments of the present invention;

FIG. 5 is a schematic diagram showing that a base station determinesresource configuration for a UE according to a fourth embodiment of theembodiments of the present invention;

FIG. 6 is a flowchart of a method for determining, by a base station, anactual available bandwidth of a UE on a second carrier according to theembodiment shown in FIG. 5;

FIG. 7 is a flowchart of another method for determining, by a basestation, an actual available bandwidth of a UE on a second carrieraccording to the embodiment shown in FIG. 5;

FIG. 8 is a schematic diagram showing that a base station determinesresource configuration for a UE according to a fifth embodiment of theembodiments of the present invention;

FIG. 9 is a flowchart of a communications method according to anembodiment of the present invention;

FIG. 10 is a schematic structural diagram of a base station according toan embodiment of the present invention;

FIG. 11 is a schematic structural diagram of another base stationaccording to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a piece of user equipmentaccording to an embodiment of the present invention; and

FIG. 13 is a schematic structural diagram of another user equipmentaccording to an embodiment of the present invention.

DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS

To make a person skilled in the art understand the technical solutionsin the embodiments of the present invention better, and make theobjectives, features, and advantages of the embodiments of the presentinvention clearer, the following further describes the technicalsolutions in the embodiments of the present invention in detail withreference to the accompanying drawings.

In this specification, a bandwidth refers to a frequency band, and mayinclude a width of the frequency band and a location of the frequencyband in a given spectrum; or may also refer to the width of thefrequency band.

In many scenarios, there is a case in which an actual availablebandwidth is inconsistent with a system bandwidth, for example:

(1) FDM ICIC

Base stations coordinate with each other to divide a whole systembandwidth into several parts, and an edge UE of each cell works on oneor multiple spectrum resources thereof, so as to implement inter-cellinterference coordination in an FDM manner. However, in this workingmanner, it is still required to use a downlink pilot signal of the wholesystem bandwidth to perform measurement on channel state information,which is inconsistent with interference information of an actual datachannel.

(2) Non-Standard Spectrum

The existing 3GPP LTE Rel.10 standard defines several standard bandwidthvalues. For detailed information, refer to 3GPP 36.101 or 3GPP 36.104.However, a scenario of a non-standard spectrum exists during actualnetwork deployment. For example, an available spectrum is 8M; deploymentof a 5M LTE system results in a waste of spectrum resources, and if a10M LTE system is deployed, the system probably cannot work normallybecause of adjacent-frequency interference.

(3) Capability Difference Between UEs

A great requirement for different terminal specifications is derivedfrom actual communication scenarios, and it is difficult for a singleterminal specification to satisfy, for example, a demand, in Internet ofThings communication, which is characterized in that small-data-amountcommunication, instead of broadband communication, is mostly performedbetween a terminal and a network. In addition, deployment of a largenumber of Internet of Things terminals also requires a large number oflow-cost terminals. By comparing an Internet of Things terminal with anexisting broadband communications terminal, both of them obviously havedifferent communication requirements and specifications, and therefore,different definitions of UE capabilities are generated.

Certainly, there are other scenarios in which an actual availablebandwidth is inconsistent with a system bandwidth, which are notenumerated herein. For these scenarios, the embodiments of the presentinvention provide a radio resource configuration method and a device, sothat a radio resource can be effectively and fully used.

Refer to FIG. 1, which is a flowchart of a radio resource configurationmethod according to an embodiment of the present invention.

The method may include:

Step 101: A base station determines, for a UE, resource configurationused for communication between the UE and the base station, where theresource configuration includes any one or any combination of a resourceallocation bandwidth, a channel state information CSI pilot bandwidth,and a CSI measurement bandwidth.

Before the base station performs step 101, the base station broadcasts asystem bandwidth used by a cell in which the UE is located, and the UEestablishes an RRC connection with the base station according to thesystem bandwidth broadcast by the base station. In this case, a resourceallocation bandwidth, a channel state information (Channel StateInformation, CSI) pilot bandwidth, and a CSI measurement bandwidth thatare used by the UE are all limited within a range of the systembandwidth; and the system bandwidth is used as a default value.

In this embodiment of the present invention, in the foregoing scenariosin which an actual available bandwidth of the UE is inconsistent withthe system bandwidth (or in another scenario, which is not specificallylimited herein), after the UE establishes the RRC connection with thebase station, the base station may perform this step to determine theresource configuration for the UE.

In this step, the base station determines, for the UE, the resourceconfiguration used for communication between the UE and the basestation, where the resource configuration includes at least one of theresource allocation bandwidth, the CSI pilot bandwidth, and the CSImeasurement bandwidth, where the resource allocation bandwidth is abandwidth used to generate resource block allocation information indownlink control information (DCI), the CSI pilot bandwidth is abandwidth used to transmit a CSI pilot, and the CSI measurementbandwidth is a bandwidth used for CSI measurement. In this embodiment ofthe present invention, unless specially noted, each of the foregoingbandwidths may include an uplink bandwidth and/or a downlink bandwidth.For example, the resource allocation bandwidth may include an uplinkresource allocation bandwidth and/or a downlink resource allocationbandwidth, the CSI pilot bandwidth may include an uplink CSI pilotbandwidth and/or a downlink CSI pilot bandwidth, and the CSI measurementbandwidth may only include a downlink CSI measurement bandwidth.

The resource allocation bandwidth, the CSI pilot bandwidth, and the CSImeasurement bandwidth may have different bandwidth values, and eachbandwidth value and a value of the system bandwidth may be independentfrom each other.

Step 102: The base station sends, to the UE by using dedicated signalingor a common message, the resource configuration that is determined forthe UE and used for communication between the UE and the base station.

The common message may be a system message for all UEs, or may be aUE-type common message for users of a type; and the dedicated signalingmay be an RRC reconfiguration message or the like.

In this embodiment of the present invention, after a UE establishes aconnection with a base station, the base station re-determines resourceconfiguration for the UE, so that a radio resource is effectively andfully used. This method can be applicable to many scenarios, which are,for example but are not limited to, FDM ICIC, a non-standard spectrum,and a capability difference between UEs.

In an embodiment of the embodiments of the present invention, a processof determining, by the base station, the resource allocation bandwidth,the channel state information CSI pilot bandwidth, and the CSImeasurement bandwidth of the UE may be as follows:

(1) Resource Allocation Bandwidth

In the existing 3GPP LTE Rel.11 standard, a value of the resourceallocation bandwidth is equal to a value of the system bandwidth.Resource block (Resource Block, RB) allocation indications included inDCI information that is carried in a physical downlink control channel(Physical Downlink Control Channel, PDCCH), an enhanced PDCCH (EnhancedPDCCH, EPDCCH), or the like and received by the UE are all calculatedbased on the resource allocation bandwidth. For detailed content of theresource allocation method, refer to chapters such as 3GPP36.213 Rel.117.1.6 and 8.1.

In this embodiment of the present invention, resource allocationbandwidths corresponding to data channels of different types may bedifferent. If a logical channel carried by a current physical datachannel (a PDSCH or a PUSCH) is at least one of a common control channel(CCCH), a paging control channel (PCCH), a broadcast control channel(BCCH), a multicast traffic channel (MTCH), and a multicast controlchannel (MCCH), or a common logical channel of another type, a resourceallocation bandwidth, in scheduling information of the data channel,that is used to indicate physical resource allocation is still thesystem bandwidth; otherwise, if the logical channel carried by thecurrent physical data channel is a non-common logical channel, theresource allocation bandwidth is the resource allocation bandwidthconfigured for the UE by the base station in step 102. For definition ofthe logical channel, refer to 3GPP36.300. In this embodiment of thepresent invention, a value of the resource allocation bandwidth and thevalue of the system bandwidth are independent from each other, where theresource allocation bandwidth is a UE-specific configuration parameterand is mainly corresponding to a physical data channel that carries anon-common logical channel.

Optionally, a size of a resource block group (RBG) that needs to be usedin resource allocation information of the physical data channel thatcarries the non-common logical channel is determined by the systembandwidth.

(2) CSI Pilot Bandwidth

The CSI pilot bandwidth is a UE-specific configuration parameter, andthe CSI pilot especially refers to a reference signal used for channelstate information CSI measurement. The CSI pilot may include referencesignals such as a non-zero power CSI reference signal (NZP CSI-RS), azero power CSI reference signal (ZP CSI-RS), a cell specific referencesignal (CRS), a sounding reference signal (SRS) that are defined in anexisting standard, and at least one of other reference signals that maybe used for CSI measurement. In this embodiment of the presentinvention, a value of the CSI pilot bandwidth and the value of thesystem bandwidth are independent from each other.

In an embodiment of the embodiments of the present invention, afterconfiguring the CSI pilot bandwidth for the UE, the base station mayfurther notify the UE of a CSI pilot bandwidth used by the base station,so that the UE can determine, according to the CSI pilot bandwidthconfigured for the UE by the base station and the CSI pilot bandwidth ofthe base station, a relative position, of the CSI pilot bandwidthconfigured for the UE by the base station, in the CSI pilot bandwidth ofthe base station, so as to intercept, according to the relative positionfrom a CSI pilot sequence used by the base station, a CSI pilot sequenceused by the UE.

In this embodiment of the present invention, it is possible that aspectrum bandwidth and a CSI pilot bandwidth that are actually used onthe side of the base station are inconsistent with a spectrum bandwidthactually used on the side of the UE and a CSI pilot bandwidth used bythe UE. Unless specially noted, the resource allocation bandwidth, theCSI pilot bandwidth, and the CSI measurement bandwidth that arementioned in this embodiment of the present invention all refer tobandwidth values configured for the UE by the base station, and are notbandwidth values used on the side of the base station.

In another embodiment of the embodiments of the present invention, ifthe CSI pilot is an uplink SRS reference signal, the value of the CSIpilot bandwidth (namely, an SRS frequency domain resource) configuredfor the UE by the base station and the value N_(RB) ^(UL) of the systembandwidth are independent from each other. Parameters for determining anSRS frequency domain resource in the existing protocol 3GPP LTE Rel.11include a cell-level parameter SRS bandwidth configuration(srs-BandwidthConfig, C_(SRS)), and UE-level parameters an SRS bandwidth(srs-Bandwidth, B_(SRS)), a frequency domain position(freqDomainPosition, n_(RRC)), a frequency hopping bandwidth(srs-HoppingBandwidth, b_(hop)), and the like. The UE determines the SRSfrequency domain resource by using the parameters and the systembandwidth N_(RB) ^(UL). For details, refer to the chapter 3GPP36.2115.5.3.

In this embodiment of the present invention, mutual independence betweenthe SRS frequency domain resource and the system bandwidth N_(RB) ^(UL)may be specifically implemented in the following two manners:

Manner 1: The base station configures the UE-level SRS bandwidthconfiguration C_(SRS) for the UE.

The UE determines the SRS frequency domain resource according to theUE-level C_(SRS) configured for the UE by the base station and otherparameters such as B_(SRS), b_(hop), and n_(RRC). In this embodiment ofthe present invention, an optional manner of defining C_(SRS) is shownin the following table. Compared with an existing standard, C_(SRS) hasa larger indication range, for example, may be indicated by 4 bits or 5bits. Meanings of parameters m_(SRS,j), N_(j), j=1, 2, 3 in thefollowing table are the same as meanings of parameters in the existingstandard 3GPP36.211 5.5.3. In addition, the uplink system bandwidthN_(RB) ^(UL) and the SRS frequency domain resource are independent fromeach other.

B_(SRS) = 0 B_(SRS) = 1 B_(SRS) = 2 B_(SRS) = 3 C_(SRS) m_(SRS, 0) N₀m_(SRS,1) N₁ m_(SRS, 2) N₂ m_(SRS, 3) N₃  0 96 1 48 2 24 2 4 6  1 96 132 3 16 2 4 4  2 80 1 40 2 20 2 4 5  3 72 1 24 3 12 2 4 3  4 64 1 32 216 2 4 4  5 6o 1 20 3 4 5 4 1  6 48 1 24 2 12 2 4 3  7 48 1 16 3 8 2 4 2 8 40 1 20 2 4 5 4 1  9 36 1 12 3 4 3 4 1 10 32 1 16 2 8 2 4 2 11 24 1 46 4 1 4 1 12 20 1 4 5 4 1 4 1 13 16 1 4 4 4 1 4 1 14 12 1 4 3 4 1 4 1 158 1 4 2 4 1 4 1 16 4 1 4 1 4 1 4 1

Manner 2: The base station configures an SRS allocation bandwidthN_(RB,SRS) ^(UL) for the UE.

The SRS allocation bandwidth N_(RB,SRS) ^(UL) herein corresponds to theuplink system bandwidth N_(RB) ^(UL) in an existing LTE standard. Thechapter 36.2115.5.3.2 in an existing protocol defines multiple tableswith different N values, including tables 5.5.30.2-1, 5.5.3.2-2,5.5.3.2-3, 5.5.3.2-4, and the like. In this embodiment of the presentinvention, these tables may be reused, and selection is performed amongthe tables according to a value of N_(RB,SRS) ^(UL). A UE determines anSRS frequency domain resource of the UE by using the parameters C_(SRS),B_(SRS), b_(hop), n_(RRC), and the like that are configured by the basestation, and according to the selected table. Herein, C_(SRS) may be acell-level parameter, or may be a UE-specific configuration parameter.

(3) CSI Measurement Bandwidth

The CSI measurement bandwidth is also a UE-specific configurationparameter. A user performs CSI measurement on a CSI reference signal ina specific location of the configured CSI pilot bandwidth according tothe configured CSI measurement bandwidth. The UE performs PMI (PrecodingMatrix Indicator) measurement, CQI (Channel Quality Indicator)measurement, RI (Rank Indicator) measurement, and the like within arange of the CSI measurement bandwidth. For definitions of PMI/CQI/RIand the like, refer to 3GPP36.213. The base station may configuremultiple CSI measurement bandwidths for the UE, and the UE independentlyperforms CSI measurement in each CSI measurement bandwidth. Each definedCSI measurement bandwidth falls within a range of the CSI pilotbandwidth. In this embodiment of the present invention, a value of theCSI measurement bandwidth and the value of the system bandwidth areindependent from each other.

In this embodiment of the present invention, a base stationre-determines resource configuration for a UE, so that a radio resourceis effectively and fully used.

In another embodiment, the method in this embodiment of the presentinvention not only can be applicable to a single-carrier scenario, butalso can be applicable to a multi-carrier scenario that includes atleast a first carrier and a second carrier. In the multi-carrierscenario, a process of determining, by the base station, the resourceconfiguration for the UE is specifically: determining, by the basestation, the resource configuration of the UE on the first carrier.

The method may further include: determining, by the base station,scheduling information of the UE on the second carrier, where thescheduling information includes at least one of a resource allocationbandwidth, a CSI pilot bandwidth, and a CSI measurement bandwidth, andfrequency number information of the second carrier. The schedulinginformation may further include parameters for determining a signalwaveform of the second carrier, such as a multiple access manner and anair interface parameter (for example, a distribution mode of referencesignals and a frame structure).

In this embodiment of the present invention, when the base stationconfigures any resource of the resource allocation bandwidth, the CSIpilot bandwidth, and the CSI measurement bandwidth for the UE, in boththe single-carrier scenario and the multi-carrier scenario,configuration methods are similar.

In another embodiment of the embodiments of the present invention, aprocess of determining, by the base station for the UE, the resourceconfiguration used for communication between the UE and the base stationmay include: determining, by the base station, an actual availablebandwidth of the UE.

The base station may determine the actual available bandwidth of the UEaccording to a bandwidth condition of the base station or that of aneighboring base station, or may directly determine the actual availablebandwidth of the UE according to a spectrum resource reported by the UE,or may determine the actual available bandwidth of the UE according to aspectrum resource selected by the UE and with reference to a bandwidthcondition of the base station, or may determine the actual availablebandwidth of the UE according to an access process difference of the UEor a UE capability reported by the UE. The actual available bandwidthmay be greater than the system bandwidth or may be less than the systembandwidth, and is independent from the system bandwidth.

Optionally, when the base station determines the resource configurationfor the UE according to the actual available bandwidth of the UE, aconfiguration process is similar to the configuration processes in theforegoing (1), (2), and (3), and a difference only lies in limitation ona specific value of each bandwidth. If the resource configurationincludes the resource allocation bandwidth, the resource allocationbandwidth is configured to include the actual available bandwidth, thatis, the actual available bandwidth is made to be located within theresource allocation bandwidth. If the resource configuration includesthe channel state information CSI pilot bandwidth, the CSI pilotbandwidth is configured to be within the actual available bandwidth. Ifthe resource configuration includes the CSI measurement bandwidth, theCSI measurement bandwidth is configured to be within the actualavailable bandwidth.

In the case of the single-carrier scenario, the base station directlydetermines an actual available bandwidth of the UE on a current carrier.In the multi-carrier scenario, for example, in a scenario that includesa first carrier and a second carrier, the base station may separatelydetermine an actual available bandwidth of the UE on the first carrierand an actual available bandwidth of the UE on the second carrier. Thebase station then separately determines resource configuration on thefirst carrier for the UE according to the actual available bandwidth onthe first carrier, and determines resource configuration on the secondcarrier for the UE according to the actual available bandwidth on thesecond carrier.

In another embodiment, the base station may also directly determine theresource configuration of the UE according to a UE capability, or mayperform determining according to other parameters, which is notspecifically limited.

In this embodiment of the present invention, a base stationre-determines resource configuration for a UE, so that a radio resourceis effectively and fully used.

In an embodiment, if an actual available bandwidth 201 of the UEdetermined by the base station is not greater than a system bandwidth202 broadcast by the base station, as shown in FIG. 2a to FIG. 2b :after the UE establishes the connection with the base station, the basestation configures, for the UE by means of signaling configuration, theresource configuration used for communication between the UE and thebase station, where signaling may be dedicated signaling, broadcastsignaling, or the like. The resource configuration may be specificallyas follows.

A value of a resource allocation bandwidth 203 is not less than that ofthe system bandwidth 202, the actual available bandwidth 201 of the UEis located within the resource allocation bandwidth 203, and a defaultvalue of the resource allocation bandwidth 203 may be equal to the valueof the system bandwidth 202; a CSI pilot bandwidth 204 is configured tobe within the actual available bandwidth 201, namely, located within theresource allocation bandwidth 203; a specific value of the CSI pilotbandwidth may be selectively configured by the base station; and adefault value of the CSI pilot bandwidth 204 may be equal to the valueof the resource allocation bandwidth 203; and a CSI measurementbandwidth 205 falls within a range of the CSI pilot bandwidth 204, aspecific value of the CSI measurement bandwidth may be determined by thebase station, and a default value is equal to the value of the CSI pilotbandwidth 204.

In another embodiment, if an actual available bandwidth 301 of the UEdetermined by the base station is not less than a system bandwidth 302,as shown in FIG. 3a to FIG. 3b : Before the base station configures, forthe UE, a resource allocation bandwidth 303 matching the actualavailable bandwidth 301, a resource allocation bandwidth 303 a jointlyused by the base station and the UE uses a value of the system bandwidth302 as a default value. The base station configures, by means ofsignaling configuration, the resource configuration used forcommunication between the UE and the base station, where the resourceconfiguration may specifically include that: the resource allocationbandwidth 303 includes the actual available bandwidth 301; a CSI pilotbandwidth 304 falls within a range of the actual available bandwidth301, and may be selectively configured by the base station; and adefault value is equal to a value of the resource allocation bandwidth303; and a CSI measurement bandwidth 305 falls within a range of the CSIpilot bandwidth 304, and may be selectively configured by the basestation; and a default value is equal to a value of the CSI pilotbandwidth 304.

In another embodiment, as shown in FIG. 4:

Because different UEs that access a same carrier have differentcapabilities, actual available bandwidths of the UEs vary from oneanother to some extent. For example, as shown in FIGS. 4, A, B, and Care three UEs with different capabilities; and a UE capability of eachUE may be determined by the base station according to an access processof the UE, or may be reported to the base station by the UE. An actualavailable bandwidth 401 a of UE A is equal to a system bandwidth 401,and UE A only supports resource configuration that is determinedaccording to the system bandwidth 401 and can be used for communicationbetween the UE A and the base station. A limited capability of UE Bdetermines that an actual available bandwidth 401 b of UE B is less thanthe system bandwidth 401. UE C has a relatively high capability and hasan actual available bandwidth 401 c greater than the system bandwidth401, and supports resource configuration re-determined for UE C by anetwork. For a process of configuring, by the base station, workingspectrums for UE A and UE C, refer to the foregoing embodiments shown inFIG. 2a , FIG. 2b , FIG. 3a and FIG. 3b . Configuration for UE B isspecifically as follows: a resource allocation bandwidth is not lessthan the actual available bandwidth 401 b, and a default value is theactual available bandwidth 401 b determined and defined according to thecapability of UE B.

Because the actual available bandwidth 401 b defined according to thecapability of UE B is limited, whether the base station configures a CSIpilot bandwidth and a CSI measurement bandwidth for UE B is related to acharacteristic of whether UE B needs to perform CSI measurement, whichtherefore may be implemented in the following two manners:

In manner 1, it is assumed that UE B does not need to perform CSIchannel state information measurement.

In this case, the base station does not need to perform parameterconfiguration for the CSI measurement bandwidth and the CSI pilotbandwidth.

The base station needs to notify UE B of a pilot resource location usedby another UE within a range of the actual available bandwidth 401 b ofUE B, and the UE B does not acquire a signal from the resource locationwhen receiving downlink data from the base station. Alternatively, whenimplementing resource mapping of UE B, the side of the base station doesnot consider a resource location, that is occupied by a pilot signalused by another UE, within a receiving bandwidth of UE B; and after theresource mapping is completed, puncturing is performed on the pilotresource location; and on the side of UE B, it is also considered thatUE B also performs data transmission on the pilot resource locationwithin a resource allocation indication range of UE B.

In manner 2, it is assumed that UE B needs to perform CSI channel stateinformation measurement.

A configured CSI pilot bandwidth falls within the actual availablebandwidth 401 b and may be selectively configured by the base station,and a default value is equal to a value of the actual availablebandwidth 401 b.

A configured CSI measurement bandwidth falls within the CSI pilotbandwidth, and may be selectively configured by the base station; and adefault value is equal to a value of the CSI pilot bandwidth.

In another embodiment, as shown in FIG. 5, in the multi-carrierscenario: the UE maintains communication with the base station on acurrent first carrier (a carrier a), and the base station may determine,for the UE, resource configuration on the carrier a, such as a CSI pilotbandwidth 502 a and a CSI measurement bandwidth 503 a, where aconfiguration method is similar to that in the foregoing embodiments.The UE receives, within a system bandwidth 501, the resourceconfiguration on the carrier a, where the resource configuration isdetermined for the UE by the base station.

In this embodiment, the base station may further send, on the firstcarrier (the carrier a) according to a current network environment,scheduling information of a user on a second carrier (a carrier b). Thescheduling information indicates resource configuration used by the useron the carrier b, and the scheduling information may include at leastone of a CSI pilot bandwidth 502 b, a CSI measurement bandwidth 503 b,and the like, frequency number information of the carrier b (forexample, EARFCN or Band information defined in the 3GPP 36.101, afrequency shift and a shift direction of the carrier b relative to thecarrier a, or a frequency number indication manner in another form),physical resource allocation information of a data channel, and thelike. A frequency number of the carrier b is a basis used by a user todetermine resource allocation of a data channel, the CSI pilot bandwidth502 b, the CSI measurement bandwidth 503 b, and the like.

According to the scheduling information, that is obtained on the carriera, of the carrier b, the UE receives data on the carrier b after a delaytime indicated by the user in resource configuration or a fixed delaytime, where a starting time point of the delay time is a correspondingtime, a frame, or a subframe at/in which the UE receives the schedulinginformation.

Before the base station determines the resource configuration on thecarrier b, the method may further include: first determining, by thebase station, an actual available bandwidth of the UE on the secondcarrier, and then determining, by the base station, the resourceconfiguration of the UE on the second carrier according to the actualavailable bandwidth of the UE on the second carrier.

A process of determining, by the base station, the actual availablebandwidth of the UE on the second carrier may include:

As shown in FIG. 6, manner 1 may include:

Step 601: The base station broadcasts spectrum indication information.

The indication information indicates a spectrum that can be scheduledfor transmission by the base station and a resource scheduling range ofthe base station; and the spectrum indication information may include adedicated spectrum range that belongs to an operator, and/or a spectrumrange used with limitation, and/or resources used without limitation.The dedicated spectrum range refers to that the spectrum range can onlybe used by a network device of a specific operator, and cannot be usedby a network device of another operator. The spectrum range used withlimitation refers to that the spectrum range is not dedicatedly used bythe operator and includes a spectrum that can be used under certaincircumstances. The resources used without limitation refer to that thespectrum is a non-dedicated spectrum shared by multiple networkoperators.

After receiving the broadcast information, the UE selects a part or thewhole of the spectrum as an available spectrum of the UE according to acapability of the UE, a channel status, and the like; and reports theselection result to the base station.

Step 602: The base station receives a spectrum that is sent by the UEand selected by the UE based on the spectrum indication information,where the spectrum indication information is broadcast by the basestation and indicates a spectrum that can be scheduled for transmission.

Step 603: The base station determines the received spectrum, selected bythe UE, as the actual available bandwidth of the UE.

As shown in FIG. 7, manner 2 may include:

Step 701: The base station receives a spectrum range that is sent by theUE and selected by the UE within an available spectrum range.

The UE selects, within an available spectrum resource range determinedaccording to a capability of the UE, a part or the whole of a spectrumrange as an available spectrum determined according to the capability ofthe UE; and reports the selection result to the base station.

An available spectrum range determined according to the capability ofthe UE, namely, a spectrum selected by the UE within the availablespectrum resource range of the UE, includes a dedicated spectrum rangeof an operator to which the UE belongs, and/or a spectrum range usedwith limitation, and/or a spectrum range used without limitation.

Step 702: The base station determines an actual available bandwidth inthe spectrum range selected by the UE.

The base station selects a part or the whole of a spectrum as the actualavailable bandwidth of the UE according to a reporting result of the UE.A spectrum range that can be scheduled for transmission by the basestation determines a resource scheduling range of the base station, andthe actual available bandwidth of the UE falls within the resourcescheduling range of the base station.

In addition, communication manners or multiple access manners of thecarrier a and the carrier b may be independent from each other, anddifferent multiple access manners may be used. For example, acommunication manner on the carrier a is LTE, and another standard suchas WCDMA (TD-SCDMA) is used as a communication manner on the carrier b.The carrier a and the carrier b may also use different air interfaceparameters, for example, frame structures, reference signal patterns,and the like. Therefore, the scheduling information, acquired by the UEon the carrier a, of the carrier b may further include parameters fordetermining a signal waveform of the carrier b, such as a multipleaccess manner and an air interface parameter.

In another embodiment, as shown in FIG. 8:

If an actual available bandwidth of the UE that is determined by thebase station is not less than a system bandwidth, resource configurationdetermined for the UE by the base station may be specifically asfollows: a resource allocation bandwidth includes the actual availablebandwidth, the system bandwidth is always within the resource allocationbandwidth, and the resource allocation bandwidth may be asymmetricalrelative to a center frequency used by the system bandwidth; aconfigured CSI pilot bandwidth falls within the actual availablebandwidth, and may be selectively configured by the base station; and adefault value is equal to a value of the resource allocation bandwidth;and a configured CSI measurement bandwidth falls within a range of theCSI pilot bandwidth, and may be selectively configured by the basestation; and a default value is equal to a value of the CSI pilotbandwidth.

Radio resources allocated to different UEs may overlap, as shown in FIG.8.

Refer to FIG. 9, which is a flowchart of a communications methodaccording to an embodiment of the present invention.

The method may include:

Step 901: A UE receives resource configuration that is sent by a basestation by using dedicated signaling or a common message, determined bythe base station, and used for communication between the UE and the basestation.

After establishing a connection with the base station according to asystem bandwidth in a broadcast message, the UE receives the resourceconfiguration sent by the base station, where the resource configurationincludes at least one of a resource allocation bandwidth, a channelstate information CSI pilot bandwidth, and a CSI measurement bandwidth,where the resource allocation bandwidth is a bandwidth used to generateresource block allocation information in downlink control information.

Step 902: The UE communicates with the base station according to theresource configuration used for communication between the UE and thebase station.

In this embodiment of the present invention, after the UE establishesthe connection with the base station, the UE receives a radio resourceconfigured by the base station, and communicates with the base stationby using the radio resource, so that the radio resource is effectivelyand fully used.

In another embodiment of the embodiments of the present invention, ifthe resource configuration includes the resource allocation bandwidth,the communicating, by the UE, with the base station according to theresource configuration used for communication between the UE and thebase station includes: determining, by the UE according to the resourceallocation bandwidth and resource allocation indication information of aphysical data channel, a physical resource occupied by the physical datachannel, where a logical channel carried by the physical data channel isa non-common logical channel.

In another embodiment, if the resource configuration includes the CSIpilot bandwidth, before the communicating, by the UE, with the basestation according to the resource configuration used for communicationbetween the UE and the base station, the method further includes:receiving, by the UE, a CSI pilot bandwidth of the base station; anddetermining, by the UE according to the CSI pilot bandwidth configuredfor the UE by the base station and the CSI pilot bandwidth of the basestation, a relative position, of the CSI pilot bandwidth configured forthe UE by the base station, in the CSI pilot bandwidth of the basestation, so as to intercept, according to the relative position from aCSI pilot sequence used by the base station, a CSI pilot sequence usedby the UE; and the communicating, by the UE, with the base stationaccording to the resource configuration used for communication betweenthe UE and the base station is specifically: performing, by the UE, CSImeasurement in the CSI measurement bandwidth by using the interceptedCSI pilot sequence.

In another embodiment, if the resource configuration includes the CSIpilot bandwidth, and the CSI pilot bandwidth is an SRS frequency domainresource, the SRS frequency domain resource and an uplink systembandwidth are independent from each other.

If the CSI pilot is an uplink SRS, the receiving, by the UE, resourceconfiguration that is sent by the base station by using dedicatedsignaling or a common message and used for communication between the UEand the base station includes: receiving, by the UE, UE-level C_(SRS),B_(SRS), b_(hop), and n_(RRC) configured for the UE by the base station;the communicating, by the UE, with the base station according to theresource configuration used for communication between the UE and thebase station includes: determining, by the UE, an SRS frequency domainresource according to the UE-level C_(SRS), the B_(SRS), the b_(hop),and the n_(RRC); and communicating, by the UE, with the base stationaccording to the SRS frequency domain resource.

If the CSI pilot is an uplink SRS, the receiving, by the UE, resourceconfiguration that is sent by the base station by using dedicatedsignaling or a common message and used for communication between the UEand the base station includes: receiving, by the UE, N_(RB,SRS) ^(UL),UE-level or cell-level C_(SRS), B_(SRS), b_(hop), and n_(RRC) of the UEthat are configured by the base station; and the communicating, by theUE, with the base station according to the resource configuration usedfor communication between the UE and the base station includes:determining, by the UE, an SRS frequency domain resource according tothe N_(RB,SRS) ^(UL), the UE-level or cell-level C_(SRS), the B_(SRS),the b_(hop), and the n_(RRC); and communicating, by the UE, with thebase station according to the SRS frequency domain resource.

In another embodiment, if the resource configuration includes multipleCSI measurement bandwidths, the communicating, by the UE, with the basestation according to the resource configuration used for communicationbetween the UE and the base station includes: independently performing,by the UE, CSI measurement in each CSI measurement bandwidth of themultiple CSI measurement bandwidths.

The method in this embodiment of the present invention may further beapplied to a multi-carrier scenario that includes at least a firstcarrier and a second carrier. The receiving, by the UE, resourceconfiguration that is sent by the base station by using dedicatedsignaling or a common message and used for communication between the UEand the base station is specifically: receiving, by the UE on the firstcarrier, the resource configuration, sent by the base station by usingthe dedicated signaling or the common message, of the UE on the firstcarrier; and the method further includes: receiving, by the UE on thefirst carrier, scheduling information, sent by the base station by usingthe dedicated signaling or the common message, of the UE on the secondcarrier, where the scheduling information includes any one or anycombination of a resource allocation bandwidth, a CSI pilot bandwidth,and a CSI measurement bandwidth, and frequency number information of thesecond carrier.

The scheduling information, that is acquired by the UE on the firstcarrier, of the second carrier may further include parameters fordetermining a signal waveform of the second carrier, such as a multipleaccess manner and an air interface parameter (for example, adistribution mode of reference signals or a frame structure).

This embodiment of the present invention not only can be applicable to3GPP LTE, but also can be applicable to communications systems includingWIMAX and the like that use, but not limited to, an OFDM technology, andsimilarly can be also applicable to WCDMA, TD-SCDMA, CDMA2000, and thelike that use, but not limited to, a CDMA technology.

The method embodiments of the embodiments of the present invention aredescribed above, and apparatuses for implementing the foregoing methodsare described below.

Refer to FIG. 10, which is a schematic structural diagram of a basestation according to an embodiment of the present invention.

The base station 100 may include: a determining unit 1001, configuredto: after a piece of user equipment UE establishes a connection with thebase station according to a system bandwidth in a broadcast message,determine, for the user equipment, resource configuration used forcommunication between the UE and the base station, where the resourceconfiguration includes at least one of a resource allocation bandwidth,a channel state information CSI pilot bandwidth, and a CSI measurementbandwidth, where the resource allocation bandwidth is a bandwidth usedto generate resource block allocation information in downlink controlinformation; and a sending unit 1002, configured to send, to the UE byusing dedicated signaling or a common message, the resourceconfiguration that is determined for the UE and used for communicationbetween the UE and the base station.

In this embodiment of the present invention, a base station reconfiguresa radio resource for a UE, so that the radio resource is effectively andfully used. This method can be applicable to many scenarios, which are,for example but are not limited to, FDM ICIC, a non-standard spectrum,and a capability difference between UEs.

In another embodiment of the embodiments of the present invention, thedetermining unit may include: a first bandwidth determining subunit,configured to determine an actual available bandwidth of the UE; and afirst resource determining subunit, specifically configured todetermine, according to the actual available bandwidth of the UE, theresource configuration used for communication between the UE and thebase station.

In another embodiment of the embodiments of the present invention, thedetermining unit is specifically configured to: if the resourceconfiguration includes the resource allocation bandwidth, determine thatthe actual available bandwidth is located within the resource allocationbandwidth; if the resource configuration includes the CSI pilotbandwidth, determine that the CSI pilot bandwidth is located within theactual available bandwidth; and if the resource configuration includesthe CSI measurement bandwidth, determine that the CSI measurementbandwidth is located within the actual available bandwidth.

In another embodiment of the embodiments of the present invention, thedetermining unit is specifically configured to: if the resourceconfiguration includes the resource allocation bandwidth, determine aresource allocation bandwidth used by resource allocation indicationinformation of a physical data channel, where a logical channel carriedby the physical data channel is a non-common logical channel.

In another embodiment of the embodiments of the present invention, thedetermining unit is specifically configured to: when the CSI pilot is anuplink sounding reference signal SRS, determine UE-level SRS bandwidthconfiguration C_(SRS), an SRS bandwidth B_(SRS), a frequency hoppingbandwidth b_(hop), and a frequency domain position n_(RRC) of the UE, sothat the UE determines an SRS frequency domain resource according to theUE-level C_(SRS), the B_(SRS), the b_(hop), and the n_(RRC); ordetermine an SRS allocation bandwidth N_(RB,SRS) ^(UL), UE-level orcell-level C_(SRS), B_(SRS), b_(hop), and n_(RRC) of the UE, so that theUE determines an SRS frequency domain resource according to theN_(RB,SRS) ^(UL), the UE-level or cell-level C_(SRS), the B_(SRS), theb_(hop), and the n_(RRC).

In another embodiment of the embodiments of the present invention, thedetermining unit is specifically configured to determine multiple CSImeasurement bandwidths, so that the UE independently performs CSImeasurement in each CSI measurement bandwidth.

In another embodiment of the embodiments of the present invention, whenthe base station is applied to a multi-carrier scenario that includes atleast a first carrier and a second carrier, the determining unit isspecifically configured to determine the resource configuration of theUE on the first carrier; and the determining unit is further configuredto determine scheduling information of the UE on the second carrier,where the scheduling information includes any one or any combination ofa resource allocation bandwidth, a CSI pilot bandwidth, and a CSImeasurement bandwidth, and frequency number information of the secondcarrier.

In another embodiment, the determining unit includes: a second bandwidthdetermining subunit, configured to: before the scheduling information ofthe UE on the second carrier is determined, determine an actualavailable bandwidth of the UE on the second carrier; and a secondresource determining subunit, configured to determine the schedulinginformation of the UE on the second carrier according to the actualavailable bandwidth of the UE on the second carrier.

In an embodiment, the second bandwidth determining subunit may include:a broadcasting subunit, configured to broadcast spectrum indicationinformation; a first receiving subunit, configured to receive a spectrumthat is sent by the UE and selected by the UE based on the spectrumindication information broadcast by the base station; and a firstdetermining subunit, configured to determine the received spectrum,selected by the UE, as the actual available bandwidth.

In an embodiment, the second bandwidth determining subunit may include:a second receiving subunit, configured to receive a spectrum range thatis sent by the UE and selected by the UE within an available spectrumrange; and a second determining subunit, configured to determine theactual available bandwidth in the spectrum range selected by the UE.

It should be noted that the foregoing or other operations and/orfunctions of the units/subunits of the base station in this embodimentof the present invention are used for implementing correspondingprocedures of the methods in FIG. 1 to FIG. 8, and are not described indetail herein for the purpose of brevity.

Refer to FIG. 11, which is a schematic structural diagram of anotherbase station according to an embodiment of the present invention.

The base station 110 may include a memory 1101 and a processor 1102,where the memory 1101 is configured to store a program, and theprocessor 1102 is configured to read the program in the memory 1101 toperform the following steps: after a piece of user equipment UEestablishes a connection with the base station according to a systembandwidth in a broadcast message, determining, for the user equipment,resource configuration used for communication between the UE and thebase station, where the resource configuration includes at least one ofa resource allocation bandwidth, a channel state information CSI pilotbandwidth, and a CSI measurement bandwidth, where the resourceallocation bandwidth is a bandwidth used to generate resource blockallocation information in downlink control information; and sending, bythe base station to the UE by using dedicated signaling or a commonmessage, the resource configuration that is determined for the UE andused for communication between the UE and the base station.

In this embodiment of the present invention, a base station reconfiguresa radio resource for a UE, so that the radio resource is effectively andfully used. This method can be applicable to many scenarios, which are,for example but are not limited to, FDM ICIC, a non-standard spectrum,and a capability difference between UEs.

Refer to FIG. 12, which is a schematic structural diagram of a piece ofuser equipment according to an embodiment of the present invention.

The UE 120 may include: a receiving unit 1201, configured to: after theuser equipment UE establishes a connection with a base station accordingto a system bandwidth in a broadcast message, receive resourceconfiguration that is sent by the base station by using dedicatedsignaling or a common message and used for communication between the UEand the base station, where the resource configuration is determined bythe base station for the UE, and the resource configuration includes atleast one of a resource allocation bandwidth, a channel stateinformation CSI pilot bandwidth, and a CSI measurement bandwidth, wherethe resource allocation bandwidth is a bandwidth used to generateresource block allocation information in downlink control information;and a communications unit 1202, configured to communicate with the basestation according to the resource configuration used for communicationbetween the UE and the base station.

In this embodiment of the present invention, after establishing aconnection with a base station, a UE obtains a radio resourcereconfigured for the UE by the base station, and then communicates withthe base station by using the radio resource, so that the radio resourceis effectively and fully used.

In another embodiment of the embodiments of the present invention, ifthe resource configuration includes the resource allocation bandwidth,the communications unit is configured to determine, according to theresource allocation bandwidth and resource allocation indicationinformation of a physical data channel, a physical resource occupied bythe physical data channel, where a logical channel carried by thephysical data channel is a non-common logical channel.

In another embodiment of the embodiments of the present invention, theuser equipment further includes: an information receiving unit,configured to: when the resource configuration includes the CSI pilotbandwidth, before the communications unit communicates with the basestation according to the resource configuration configured by the basestation, receive a CSI pilot bandwidth of the base station; and asequence acquisition unit, configured to determine, according to the CSIpilot bandwidth configured for the UE by the base station and the CSIpilot bandwidth of the base station, a relative position, of the CSIpilot bandwidth configured for the UE by the base station, in the CSIpilot bandwidth of the base station, so as to intercept, according tothe relative position from a CSI pilot sequence used by the basestation, a CSI pilot sequence used by the UE, where the communicationsunit is specifically configured to perform CSI measurement in the CSImeasurement bandwidth by using the intercepted CSI pilot sequence.

In another embodiment of the embodiments of the present invention, thereceiving unit is specifically configured to: when the CSI pilot is anuplink sounding reference signal SRS, receive UE-level SRS bandwidthconfiguration C_(SRS), an SRS bandwidth B_(SRS), a frequency hoppingbandwidth b_(hop), and a frequency domain position n_(RRC) that areconfigured for the UE by the base station; and the communications unitincludes: a first determining subunit, configured to determine an SRSfrequency domain resource according to the UE-level C_(SRS), theB_(SRS), the b_(hop), and the n_(RRC); and a first communicationssubunit, configured to communicate with the base station according tothe SRS frequency domain resource determined by the first determiningsubunit.

In another embodiment, the receiving unit is configured to: when the CSIpilot is an uplink SRS, receive an SRS allocation bandwidth N_(RB,SRS)^(UL), and UE-level or cell-level C_(SRS), B_(SRS), b_(hop), and n_(RRC)of the UE that are configured by the base station; and thecommunications unit includes: a second determining subunit, configuredto determine an SRS frequency domain resource according to theN_(RB,SRS) ^(UL), the UE-level or cell-level C_(SRS), the B_(SRS), theb_(hop), and the n_(RRC); and a second communications subunit,configured to communicate with the base station according to the SRSfrequency domain resource determined by the second determining subunit.

In another embodiment, the communications unit is specificallyconfigured to: when the resource configuration includes multiple CSImeasurement bandwidths, independently perform CSI measurement in eachCSI measurement bandwidth of the multiple CSI measurement bandwidths.

In another embodiment, the receiving unit is configured to: when theuser equipment is applied to a multi-carrier scenario that includes atleast a first carrier and a second carrier, receive, on the firstcarrier, the resource configuration, sent by the base station by usingthe dedicated signaling or the common message, of the UE on the firstcarrier; and receive, on the first carrier, scheduling information, sentby the base station by using the dedicated signaling or the commonmessage, of the UE on the second carrier, where the schedulinginformation includes any one or any combination of a resource allocationbandwidth, a CSI pilot bandwidth, and a CSI measurement bandwidth, andfrequency number information of the second carrier. The schedulinginformation, that is acquired by the receiving unit on the firstcarrier, of the second carrier may further include parameters fordetermining a signal waveform of the second carrier such as a multipleaccess manner and an air interface parameter (for example, adistribution mode of reference signals or a frame structure).

It should be noted that the foregoing or other operations and/orfunctions of the units/subunits of the user equipment in this embodimentof the present invention are used for implementing correspondingprocedures of the method in FIG. 9, and are not described in detailherein for the purpose of brevity.

Refer to FIG. 13, which is a schematic structural diagram of anotheruser equipment according to an embodiment of the present invention.

The user equipment 130 may include a memory 1301 and a processor 1302,where the memory 1301 is configured to store a program, and theprocessor 1302 is configured to read the program in the memory 1301 toperform the following steps: after the user equipment UE establishes aconnection with a base station according to a system bandwidth in abroadcast message, receiving, by the UE, resource configuration that issent by the base station by using dedicated signaling or a commonmessage and used for communication between the UE and the base station,where the resource configuration is determined by the base station forthe UE, and the resource configuration includes at least one of aresource allocation bandwidth, a channel state information CSI pilotbandwidth, and a CSI measurement bandwidth, where the resourceallocation bandwidth is a bandwidth used to generate resource blockallocation information in downlink control information; andcommunicating, by the UE, with the base station according to theresource configuration used for communication between the UE and thebase station.

In this embodiment of the present invention, after establishing aconnection with a base station, a UE obtains a radio resourcereconfigured for the UE by the base station, and then communicates withthe base station by using the radio resource, so that the radio resourceis effectively and fully used.

A person of ordinary skill in the art may be aware that, in combinationwith the examples described in the embodiments disclosed in thisspecification, units and algorithm steps may be implemented byelectronic hardware or a combination of computer software and electronichardware. Whether the functions are performed by hardware or softwaredepends on particular applications and design constraint conditions ofthe technical solutions. A person skilled in the art may use differentmethods to implement the described functions for each particularapplication, but it should not be considered that the implementationgoes beyond the scope of the embodiments of the present invention.

It may be clearly understood by a person skilled in the art that, forthe purpose of convenient and brief description, for a detailed workingprocess of the foregoing system, apparatus, and unit, refer to acorresponding process in the foregoing method embodiments, and detailsare not described herein again.

In the several embodiments provided in the present application, itshould be understood that the disclosed system, apparatus, and methodmay be implemented in other manners. For example, the describedapparatus embodiment is merely exemplary. For example, the unit divisionis merely logical function division and may be other division in actualimplementation. For example, a plurality of units or components may becombined or integrated into another system, or some features may beignored or not performed. In addition, the displayed or discussed mutualcouplings or direct couplings or communication connections may beimplemented through some interfaces. The indirect couplings orcommunication connections between the apparatuses or units may beimplemented in electrical, mechanical, or other forms.

The units described as separate parts may or may not be physicallyseparate, and parts displayed as units may or may not be physical units,may be located in one position, or may be distributed on a plurality ofnetwork units. Some or all of the units may be selected according toactual needs to achieve the objectives of the solutions of theembodiments.

In addition, functional units in the embodiments of the presentinvention may be integrated into one processing unit, or each of theunits may exist alone physically, or two or more units are integratedinto one unit.

When the functions are implemented in the form of a software functionalunit and sold or used as an independent product, the functions may bestored in a computer-readable storage medium. Based on such anunderstanding, the technical solutions in the embodiments of the presentinvention essentially, or the part contributing to the prior art, or allor a part of the technical solutions may be implemented in the form of asoftware product. The software product is stored in a storage medium andincludes several instructions for instructing a computer device (whichmay be a personal computer, a server, or a network device) or aprocessor to perform all or a part of the steps of the methods describedin the embodiments of the present invention. The foregoing storagemedium includes: any medium that can store program code, such as a USBflash drive, a removable hard disk, a read-only memory (ROM, Read-OnlyMemory), a random access memory (RAM, Random Access Memory), a magneticdisk, or an optical disc.

The foregoing descriptions are merely specific implementation manners ofthe present invention, but are not intended to limit the protectionscope of the present invention. Any variation or replacement readilyfigured out by a person skilled in the art within the technical scopedisclosed in the present invention shall fall within the protectionscope of the present invention. Therefore, the protection scope of thepresent invention shall be subject to the protection scope of theclaims.

1.-18. (canceled)
 19. A method, comprising: sending, to a terminal, abroadcast message comprising first bandwidth information of a firstbandwidth of a carrier; and sending, through a radio resource controlreconfiguration message, second bandwidth information of a secondbandwidth of the carrier to the terminal, wherein configuring of asecond bandwidth value of the second bandwidth is without reference to afirst bandwidth value of the first bandwidth, and the second bandwidthis usable to determine resource allocation information in downlinkcontrol information; and wherein both the first bandwidth and the secondbandwidth are downlink bandwidths, or both the first bandwidth and thesecond bandwidth are uplink bandwidths.
 20. The method according toclaim 19, wherein the second bandwidth of the carrier is usable fordetermining resource allocation information of a physical data channelwhen a logical channel carried by the physical data channel is anon-common logical channel.
 21. The method according to claim 19,wherein the first bandwidth of the carrier is usable for determiningresource allocation information of a physical data channel when alogical channel carried by the physical data channel is a common logicalchannel.
 22. The method according to claim 19, wherein establishment ofa radio resource control (RRC) connection is based on the firstbandwidth information.
 23. The method according to claim 19, wherein theradio resource control reconfiguration message further comprisesinformation of at least one of a channel state information (CSI) pilotbandwidth or a CSI measurement bandwidth.
 24. The method according toclaim 23, wherein a value of the CSI pilot bandwidth or the CSImeasurement bandwidth is without reference to the first bandwidth valueof the first bandwidth.
 25. An apparatus, comprising: a circuitryconfigured to: receive, from a network device, a broadcast messagecomprising first bandwidth information of a first bandwidth of acarrier; and receive, from the network device through a radio resourcecontrol reconfiguration message, second bandwidth information of asecond bandwidth of the carrier, the second bandwidth being usable todetermine resource allocation information in downlink controlinformation, and a second bandwidth value of the second bandwidth isconfigured without reference to a first bandwidth value of the firstbandwidth; and a circuitry configured to communicate with the networkdevice according to the second bandwidth information; and wherein boththe first bandwidth and the second bandwidth are downlink bandwidths, orboth the first bandwidth and the second bandwidth are uplink bandwidths.26. The apparatus according to claim 25, further comprising: a circuitryconfigured to determine, according to the second bandwidth and resourceallocation information of a physical data channel, a physical resourceoccupied by the physical data channel when a logical channel carried bythe physical data channel comprises a non-common logical channel. 27.The apparatus according to claim 25, further comprising: a circuitryconfigured to determine, according to the first bandwidth and resourceallocation information of a physical data channel, a physical resourceoccupied by the physical data channel when a logical channel carried bythe physical data channel comprises a common logical channel.
 28. Theapparatus according to claim 25, wherein establishment of a radioresource control (RRC) connection is based on the first bandwidthinformation.
 29. The apparatus according to claim 25, wherein the radioresource control reconfiguration message further comprises informationof at least one of a channel state information (CSI) pilot bandwidth ora CSI measurement bandwidth.
 30. The apparatus according to claim 29,wherein a value of the CSI pilot bandwidth or the CSI measurementbandwidth is without reference to the first bandwidth value of the firstbandwidth.
 31. A method, comprising: receiving, from a network device, abroadcast message comprising first bandwidth information of a firstbandwidth of a carrier; receiving, from the network device through aradio resource control reconfiguration message, second bandwidthinformation of a second bandwidth of the carrier, the second bandwidthbeing usable to determine resource allocation information in downlinkcontrol information, and a second bandwidth value of the secondbandwidth is without reference to a first bandwidth value of the firstbandwidth; and communicating with the network device according to thesecond bandwidth information; and wherein both the first bandwidth andthe second bandwidth are downlink bandwidths, or both the firstbandwidth and the second bandwidth are uplink bandwidths.
 32. The methodaccording to claim 31, further comprising: determining, according to thesecond bandwidth and resource allocation information of a physical datachannel, a physical resource occupied by the physical data channel whena logical channel carried by the physical data channel comprises anon-common logical channel.
 33. The method according to claim 31,further comprising: determining, according to the first bandwidth andresource allocation information of a physical data channel, a physicalresource occupied by the physical data channel when a logical channelcarried by the physical data channel comprises a common logical channel.34. The method according to claim 31, wherein establishment of a radioresource control (RRC) connection is based on the first bandwidthinformation.
 35. The method according to claim 31, wherein the radioresource control reconfiguration message further comprises informationof at least one of a channel state information (CSI) pilot bandwidth ora CSI measurement bandwidth.
 36. The method according to claim 35,wherein a value of the CSI pilot bandwidth or the CSI measurementbandwidth is without reference to the first bandwidth value of the firstbandwidth.